#include <stdio.h>
char* my_strcpy(char* s1, char* s2)
{
	char* ret = s1;
	/*while (*s1++=*s2++)
	{
		;
	}*/
	while (*s2 != '\0')
	{
		*s1 = *s2;
		s1++;
		s2++;
	}
	return ret;
}
int main()
{
	char a[] = "abcdef";
	char b[20] = { 0 };
	char*ret=my_strcpy(b, a);
	puts(b);
	return 0;
}
